Consider the primary functions of the muscular system. How are these functions critical to survival?

Mobility. The muscular system's main function is to allow movement.

Stability. Muscle tendons stretch over joints and contribute to joint stability.

Posture.

Circulation.

Respiration.

Digestion.

Urination.

Childbirth.

Explanation:

The muscular system is critical to survival as it helps in the maintenance of posture and the circulation of blood in the body.

Some of the functions of the muscular system include:

In conclusion, it should be noted that muscles are the only tissue that can contract and this ensures movement. This is vital for the survival of human beings.

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08: 21

read the excerpt from "the tell-tale heart.”

object there was none. passion there was none. i loved the old man. he had never wronged me. he had never given me insult. for his gold i had no desire. i think it was his eye! yes, it was this! he had the eye of a vulture—a pale blue eye, with a film over it. whenever it fell upon me, my blood ran cold; and so by degrees—very gradually—i made up my mind to take the life of the old man, and thus rid myself of the eye forever.  

read the excerpt from "the black cat.”

beneath the pressure of torments such as these, the feeble remnant of the good within me succumbed. evil thoughts became my sole intimates—the darkest and most evil of thoughts. the moodiness of my usual temper increased to hatred of all things and of all mankind; while, from the sudden, frequent, and ungovernable outbursts of a fury to which i now blindly abandoned myself, my uncomplaining wife, alas! was the most usual and the most patient of sufferers.

by revealing the narrator’s deepest thoughts, the author